单项选择题
A.Teacher and student. B.Doctor and patient. C.Lawyer and client. D.Boss and secretary.
A.She has been waiting. B.She is examining her patient. C.She is seeing her doctor. D.She wouldn’t mind waiting.
A.He is happy with his job. B.He is a very ambitious man. C.He is too ambitious to be an engine driver. D.He doesn’t like to be an engine driver.